Pocket-knife.



C. S. EVENS;

POCKET KNIFE.

APPLICATION FILED AUG.2I, 1916.

Patented Apr. 30, 1918.

5] wuewtoz lllllTTFi dTATFb PATENT UFFTTTF. cnAnLEs s. nvmvs, or WALDEN, less i503 ro unw YORK KNIFE coMr'nuY,

or new YORK, 1v. 1., a oonronAFIQN or NEW YORK.

ROCKET-KNIFE.

in which a blade is swingably mounted. to

a handle so that it can be opened and shut.

Sometimes pocket knife blades are used in such manner as to involve the danger of accidental shutting up of the knife {such for example as the pocket knife punch blade disclosed in Patent No. 1,171,422, dated February 15, 1916.

The principalobject of the present improvement is to provide a simple and practicable device which is 0 erable when the blade is open, to lock t e blade against swinging shut, thus eliminating the danger referred to.

Other objects hereof will appear in the hereinafter following description of one form in which the knife may be embodied.

To the attainment of the objects and advantages referred to, the present invention consists in the novel construction, combination and other features illustrated, described, or claimed herein.

In the accompanying drawings forming a part hereof, Figure 1 is a side view of a pocket knife, provided with a punch blade and embodying the present improvement, the same shown with the blade locked open.

Fig.2 is a similar view with the open blade unlocked.

Fig. 3 is a similar view with the blade swung partly shut.

Fig. 4 is a central. longitudinal section of part of Fig. 1. i

Fig. 5 is a similar section of apart of Fig. 2.

Fig. 6 shows, in perspective, the blade and lock device removed.

Fig. 7 shows, entirely detached from each other, all of the parts directly involved in the present invention.

The ordinary shown, the same aving the usual interior recess or grooves 8 into whichknife blades may be folded. An ordinary cutting blade 9 is shown pivoted at the lower end of the Specification of Letters Eatent. i Pfitgntefl A1913, 3(1), Application filed August 21, 19116. Serial'flto. 115,988.

ocket knife handle 7 is knife, although the presence of this blade does not affect the present invention.

. The punching blade 11 is oivoted at the upper end of the handle, .1 is blade comprises the tang 12,,pcrforated at 13 for the reception of the usual pivot pin, and the usual back-spring 14 is indicated, by which the blade is yieldingly held in closed, half-open, or open position.

7 The punch blade 11 is provided with a sharp stabbing point 15, and it will be u i'iderstood that in the use of this blade the handle is given a rotating motion, while the point 1.5 is thrust into the leather, rubber, or other material to be punched. It is in the process of performingthis punching or reaming operation that the danger is incurred of accidental shutting of the knife.

rlccord-ing to the present invention, a

movab'le lock device is employed, operable when the blade is open to lock the blade against swinging shut. This lock device comprises essentially a swinging latch or lug 25, which will preferably be mounted .on the blade member, while the other or handle member is formed with a recess or shoulder 26. These parts are so arranged that when the knife blade is open and the latch is swung outwardly, it engages in the recess closing. 7

Preferably I move the latch locking position shown in Fig. 2, to its locking position shown in Fig. 1, by hand, for example with the finger nail, although this movement could be made automatic, if desired. Being able to retain either position in which it is set by hand, the blade is easily shut when desired without the need of maintaining the pressure of the finger on the latch.

The space provided in the pocket knife handle for the accommodation of the parts of this invention is extremely limited, but the following structure of the parts gives and thereby prevents accidental an inexpensive and practicable arrangement from its non-' through both tang portions and also through i the handle portion (see'Fig. 7). In order to hold the parts in proper registry, an ad ditional pin 29 is provided on the tang part 28, engaging a corresponding hole 30 in the tan part 27.

The latch 25 has its fulcrum located between the two tang parts, and for this purpose there is provided a transverse groove 31 in one of the tang parts, engaged by the laterally extending fulcrum pins 32 of the latch; Also, the tang part 28-is recessed at 38 to correspond with the recess 26- in V the handle, so as to accommodate the latch in its swinging movements It will thus be seen that I have described a pocket knife embodying the features of invention referred to and attaining the ob- 6 jects and advantages cited, and other ad- Copies of this patent may be obtained for Whatis claimed is: 1. A pocket knife comprising a handle having a locking recess, and a blade pivoted thereto to swing open and shut, said blade having a built-up tang, and a latch movably mounted between the tang parts adapted to be positioned in said recess to lock the blade open.

7 2. In a pocket knife the combination of a grooved handle having a locking shoulder at one extremity, and a blade pivoted to such end of the handle to swing edgewise from and into the groove of the handle, together with a movable non-resilient lock device swingably mounted on the blade and adapted to retain an inoperative position flat against the blade, but to be shifted at will when the blade is open to engage with said shoulder of the handle and lock the blade rigidly in open position.

In testimony whereof, I have alhxed my signature in presence of two witnesses.

CHARLES S. EVENS.

Witnesses:

FRANK R. BENEDICT, THOMAS BROOKFIELD.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

